Bit of a long shot. On my UK spec electric, the interior light lights when the doors unlock either by the fob or the door button.I'm dredging this thread up. I am looking in to the possibility of adding an auto dimming mirror with Homelink in my US SEL. I had a look at the wiring part numbers and it doesn't look like the SEL gets a plug up in the headliner with its version of the harness. It seems like I might be able to buy a Limited car's wiring harness for $200 to get an official-type implementation.
I couldn't find a wiring diagram of the courtesy lights up above the mirror, so I took the thing apart and probed it with my multimeter. There are 4 wires, 3 of which I have some confidence in how they work. Black is ground, red is +12V constant, Yellow with a black stripe is timer switched by the car. The last one is yellow and I don't understand what it does. It didn't seem to switch on with the ignition nor did it react with the door opening. Any ideas?
I can't seem to find a wiring diagram for any Ioniq, let alone my specific model. Does anyone have a source for that?
Check this link, its for the US version I believe.Anyone with the Limited version, please supply me with the part number for your Auto-dim Rear View Mirror. It is a must with all of the night time driving I do. Thanks for checking!